There are an indefinite number of excellens clones, as there are an indefinite number of any type of Sarracenia. One pollination of S. minor against S. leucophylla will produce several hundred different clones if all the seeds germinate, all of which will be genetically different. Times that by all the different clones of S. minor available and the number of different clones of S. leucophylla available. Then take into account the fact that every time leucophylla or minor seed are produced they will also be genetically different from each other. You could end up with an infinite number of genetically different S. x excellens.